Provide an Expando implementation for the VM.

runtime/vm/symbols.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_SYMBOLS_H_
 #define VM_SYMBOLS_H_
 
 #include "vm/object.h"
 #include "vm/snapshot_ids.h"
 
@@ skipping 83 matching lines @@
   V(GrowableObjectArray, "GrowableObjectArray")                                \
   V(ImmutableArray, "ImmutableArray")                                          \
   V(OneByteString, "OneByteString")                                            \
   V(TwoByteString, "TwoByteString")                                            \
   V(FourByteString, "FourByteString")                                          \
   V(ExternalOneByteString, "ExternalOneByteString")                            \
   V(ExternalTwoByteString, "ExternalTwoByteString")                            \
   V(ExternalFourByteString, "ExternalFourByteString")                          \
   V(Stacktrace, "Stacktrace")                                                  \
   V(JSSyntaxRegExp, "JSSyntaxRegExp")                                          \
-  V(WeakProperty, "WeakProperty")                                              \
   V(Object, "Object")                                                          \
   V(_Int8Array, "_Int8Array")                                                  \
   V(_Uint8Array, "_Uint8Array")                                                \
   V(_Int16Array, "_Int16Array")                                                \
   V(_Uint16Array, "_Uint16Array")                                              \
   V(_Int32Array, "_Int32Array")                                                \
   V(_Uint32Array, "_Uint32Array")                                              \
   V(_Int64Array, "_Int64Array")                                                \
   V(_Uint64Array, "_Uint64Array")                                              \
   V(_Float32Array, "_Float32Array")                                            \
   V(_Float64Array, "_Float64Array")                                            \
   V(_ExternalInt8Array, "_ExternalInt8Array")                                  \
   V(_ExternalUint8Array, "_ExternalUint8Array")                                \
   V(_ExternalInt16Array, "_ExternalInt16Array")                                \
   V(_ExternalUint16Array, "_ExternalUint16Array")                              \
   V(_ExternalInt32Array, "_ExternalInt32Array")                                \
   V(_ExternalUint32Array, "_ExternalUint32Array")                              \
   V(_ExternalInt64Array, "_ExternalInt64Array")                                \
   V(_ExternalUint64Array, "_ExternalUint64Array")                              \
   V(_ExternalFloat32Array, "_ExternalFloat32Array")                            \
   V(_ExternalFloat64Array, "_ExternalFloat64Array")                            \
+  V(_WeakProperty, "_WeakProperty")                                            \
 
 // Contains a list of frequently used strings in a canonicalized form. This
 // list is kept in the vm_isolate in order to share the copy across isolates
 // without having to maintain copies in each isolate.
 class Symbols : public AllStatic {
  public:
   // List of strings that are pre created in the vm isolate.
   enum {
     kIllegal = 0,
 
@@ skipping 72 matching lines @@
   friend class SnapshotReader;
   friend class SnapshotWriter;
   friend class ApiMessageReader;
 
   DISALLOW_COPY_AND_ASSIGN(Symbols);
 };
 
 }  // namespace dart
 
 #endif  // VM_SYMBOLS_H_